It won't let me take it again. I actually have progressed really far into the game this time, beating 3 levels two times in 1 life. I actually came up with an idea for a power-up because of how long i've been playing.
Name :"Rewind"
Possible description: "Let me take that back" - this power-up allows your bullets to spawn from the location where they would usually disappear and instead come towards you. It also plays your music in reverse order instead. It would allow to clean up enemies that are hiding behind cover or bulkier enemies. Really helps against projectile opponents.